/*
 * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.spring.test.fieldinjection;

import java.util.concurrent.atomic.AtomicInteger;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.DelegateHelper;
import org.activiti.engine.delegate.Expression;
import org.activiti.engine.delegate.JavaDelegate;

/**

 */
public class PrototypeDelegateExpressionBean implements JavaDelegate {

    public static AtomicInteger INSTANCE_COUNT = new AtomicInteger(0);

    private Expression fieldA;
    private Expression fieldB;
    private Expression resultVariableName;

    public PrototypeDelegateExpressionBean() {
        INSTANCE_COUNT.incrementAndGet();
    }

    @Override
    public void execute(DelegateExecution execution) {
        // just a quick check to avoid creating a specific test for it
        int nrOfFieldExtensions = DelegateHelper.getFields(execution).size();
        if (nrOfFieldExtensions != 3) {
            throw new RuntimeException("Error: 3 field extensions expected, but was " + nrOfFieldExtensions);
        }

        Number fieldAValue = (Number) fieldA.getValue(execution);
        Number fieldValueB = (Number) fieldB.getValue(execution);

        int result = fieldAValue.intValue() + fieldValueB.intValue();
        execution.setVariable(resultVariableName.getValue(execution).toString(), result);
    }
}
